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鞭角华扁叶蜂是柏木、柳杉林中的重要食叶害虫，自１９９８年以来在浙江、四川、湖北、福建等省柏木、柳杉产区成灾，导致中幼林乃至上百年大树被害致死。自１９９１～１９９７年间进行了鞭角华扁叶蜂自然种群消长规律研究，结果表明：林间幼虫期逐期残存率占其总和的６０．４％ ，回归系数ｒ 值０．９６２ ９，ｂ 值０．６５５ ９，其中，危害期幼虫回归系数ｂ 值０．５６７ ３，滞育幼虫ｂ 值０．３４０ ９；卵期ｂ 值０．３０２ ７，ｒ值０．７９８ ９。幼虫期和卵期分别为第１、第２关键消亡因子；经野猪拱掘的滞育幼虫林地，其虫口减少量与对照比为１ｖ１．９４～３．０，其它种群天敌种寡量低，抑制能力弱。冬季－ ２ ℃霜冻天气，３ｃｍ 内土层滞育幼虫死亡率４３．８％ ～９７．１％ ，冰雹等灾害性天气对发生期各虫态影响明显。该虫自然种群消长指数Ｉ＝ １０．２２，明显大于１，表明种群呈现现快速上升与发展趋势。
Hornworm leaf flat bee is cypress, cedar forest in the important leaf-eating pests, since 1998 in Zhejiang, Sichuan, Hubei, Fujian and other provinces of cedar, cedar producing areas disaster, resulting in trees in the forest and even a hundred years were killed lethal. The results showed that the period-by-period residual rate of forest larvae accounted for 60.4% of the total, and the regression coefficient r was 0.962 9, the b value 0.655 9, of which, the regression coefficient b value of larvae in infestation was 0.567 3, b value of diapause larvae was 0.340 9, b value of eggs was 0.302 7 and r value was 0.798 9. The larval stage and egg stage were the first and second key extinction factors respectively. The diapause larvae and larvae of wild boar arches showed a decrease of 1v1.94-3.0 compared with the control. The numbers of natural enemies were low in other populations, Weak inhibition. Winter - 2 ℃ frost weather, soil diapirose larvae mortality within 3cm 43.8% ~ 97.1%, hail and other disastrous weather on the occurrence of the various insect states significantly. The natural population decline index I = 10.22, significantly greater than 1, indicating that the population is now showing a rapid rise and development trend.